Yeah - he could have been nicer. No question. But notice his guy didn't quit. People who worked for him seemed to actually admire his ability to be dedicated to the product and make decisions based on what was best for the product. That's pretty rare. And it was not personal with Jobs - he was just so upset that reality differed from the ideal.

He was deeply technical. He began his career as a programmer at Atari.

[Edit] Jobs had many traits that would lead a psychiatrist to classify him as sociopathic - not mass murderer type, but the psychological type. For example, his complete lack of empathy towards his daughter, who he refused to acknowledge for a long while. One of the weird traits of sociopaths is that to navigate world that requires understanding of empathy and emotions, an understanding they don't have, they build models of human behavior and can choose to deploy those models when required toward their aims. What's interesting also here is his ability to be singularly brutal to his subordinate, while at the same time be completely empathetic to the customer's view point. Just my amateur psychologist 2c, but that combination of brutality on one side with solicitousness on the other adds weight to my view that he was a high-functioning sociopath.